CN216666382U - Two keep off gear drive - Google Patents
Two keep off gear drive Download PDFInfo
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- CN216666382U CN216666382U CN202122485162.7U CN202122485162U CN216666382U CN 216666382 U CN216666382 U CN 216666382U CN 202122485162 U CN202122485162 U CN 202122485162U CN 216666382 U CN216666382 U CN 216666382U
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Abstract
The utility model discloses a two-gear transmission mechanism, which comprises: the gear shifting mechanism comprises an input shaft assembly, an intermediate shaft assembly, a gear shifting gear shaft assembly, a differential assembly and a shell assembly, wherein the input shaft assembly, the intermediate shaft assembly, the gear shifting gear shaft assembly and the differential assembly are respectively connected to the shell assembly through bearings, and the input shaft assembly comprises an input shaft which is rotatably connected to the shell assembly and a first-stage driving gear which is connected to the input shaft. According to the utility model, the primary driven gear is meshed with the secondary driven gear, so that the primary driven gear has the function of a secondary driving gear, the original secondary driving gear is omitted, and a three-stage two-gear four-shaft seven-gear transmission structure is realized; the structure of the whole transmission mechanism is simpler, and the transmission noise is reduced.
Description
Technical Field
The utility model belongs to the technical field of automobile manufacturing, and particularly relates to a two-gear transmission mechanism.
Background
The gear mechanism is one of the most widely applied transmission mechanisms in modern machinery, can be used for transmitting motion and power between any two shafts in space, has the characteristics of large transmission power range, high efficiency, accurate transmission ratio, long service life, safe and reliable work and the like, and can meet different use requirements by transmitting through different gears particularly in a gearbox of a vehicle.
In the prior art, the two-stage two-gear transmission mechanism is low in speed, has no cost advantage after being matched with a large motor, has more parts, and has no obvious advantages in the aspects of weight, noise and transmission efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a three-level two-gear four-shaft seven-gear transmission mechanism, and solves the problem that the prior art cannot meet higher requirements in aspects of dynamic property, economy, spatial arrangement, light weight and the like.
The technical scheme adopted by the utility model is as follows:
a two speed gear transmission comprising: the gear shifting mechanism comprises an input shaft assembly, an intermediate shaft assembly, a gear shifting gear shaft assembly, a differential assembly and a shell assembly, wherein the input shaft assembly, the intermediate shaft assembly, the gear shifting gear shaft assembly and the differential assembly are respectively connected to the shell assembly through bearings.
The input shaft assembly comprises an input shaft which is rotatably connected with the shell assembly and a primary driving gear which is connected with the input shaft; the primary driving gear is fixedly connected with the input shaft.
The intermediate shaft assembly comprises an intermediate shaft which is rotatably connected to the shell assembly, and a first-stage driven gear and a first-stage driving gear which are respectively connected with the intermediate shaft, wherein the first-stage driven gear is meshed with the first-stage driving gear;
the gear shifting gear shaft assembly is connected with a gear shifting driven gear, a three-level driving gear and a gear shifting executing mechanism in a rotating mode, the gear shifting executing mechanism is arranged between the gear shifting driven gear and a gear shifting driven gear, the gear shifting driven gear is meshed with the gear shifting driving gear, and the gear shifting driven gear is meshed with the one-level driven gear.
The differential assembly comprises a differential, a shell of the differential is connected with a three-level driven gear, and the three-level driven gear is meshed with a three-level driving gear.
The primary driven gear is meshed with the secondary driven gear, so that the primary driven gear has the function of a secondary driving gear, the original secondary driving gear is omitted, and a three-level, two-gear, four-shaft and seven-gear transmission structure is realized; the structure of the whole transmission mechanism is simpler, and the transmission noise is reduced.
Furthermore, the second-gear driven gear and the first-gear driven gear are respectively connected to the gear shifting gear shaft through needle bearings and can rotate at different rotating speeds relative to the gear shifting gear shaft, the first-gear driven gear and the second-gear driven gear are respectively in rotating connection with the gear shifting gear shaft, and the gear shifting executing mechanism is used for fixing the first-gear driven gear or the second-gear driven gear with the gear shifting gear shaft.
Furthermore, the gear shifting actuating mechanism realizes gear shifting through the engagement of an internal spline of the sliding meshing sleeve and an external spline of the first-gear driven gear or an external spline of the second-gear driven gear, the gear shifting actuating mechanism can comprise a synchronizer or not, the existing gear shifting actuating mechanism comprises the synchronizer, if the existing gear shifting actuating mechanism does not comprise the synchronizer, parts are further reduced, the product reliability is improved, and the non-impact gear shifting is realized through measuring and calculating the number of teeth of the spline and the matching of input and output rotating speeds. (the measurement and calculation here can obtain the relative speed of the shift actuator and the first driven gear and the second driven gear through the sensor to adjust), the shift actuator can move axially along the shift gear shaft, the selection shift gear shaft is connected with the first driven gear or the second driven gear, when the shift synchronizer is positioned on the right side (as shown in fig. 2), the first driven gear rotates synchronously with the third driven gear, when the shift synchronizer is positioned on the left side, the second driven gear rotates synchronously with the third driven gear, and when the shift actuator is positioned in the middle, the vehicle is in a neutral state.
Furthermore, the input of one-level driving gear passes through the spline with the driving motor output shaft and links to each other, differential mechanism is as drive mechanism's output with power transmission to wheel end, the casing assembly includes left casing and right casing. The left shell and the right shell are connected through bolts to jointly support the gear transmission mechanism.
The utility model has the following beneficial effects: the first-stage driven gear and the second-stage driving gear are combined into one gear, one gear is reduced compared with the existing transmission mechanism, light weight and low cost are achieved, and meanwhile, the driving gear has advantages in terms of arrangement space and economy of the whole vehicle.
Drawings
FIG. 1 is a schematic axial view of a two-speed gear transmission mechanism according to the present invention;
FIG. 2 is a schematic diagram of a two-speed gear transmission of the present invention;
fig. 3 is a schematic structural view of the two-speed gear transmission mechanism of the present invention.
1-an input shaft assembly; 11-a primary drive gear; 2-a mid-shaft assembly; 21-a primary driven gear; 22-first gear drive gear; 3-a gear shift shaft assembly; 31-two-gear driven gear; 32-first gear driven gear; 33-a tertiary drive gear; 36-a shift actuator; 4-a differential assembly; 41-three-stage driven gear; 42-a differential; 5-a housing assembly; 6-bearing.
Detailed Description
The utility model is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Functional details disclosed herein are merely illustrative of example embodiments of the utility model. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the utility model. When the terms "comprises," "comprising," "includes," and/or "including" are used herein, they specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.
It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
It should be understood that specific details are provided in the following description to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.
Example 1:
as shown in fig. 1 to 3, a two-speed gear transmission mechanism includes: the gear-shifting mechanism comprises an input shaft assembly 1, an intermediate shaft assembly 2, a gear-shifting gear shaft assembly 3, a differential assembly 4 and a shell assembly 5, wherein the input shaft assembly 1, the intermediate shaft assembly 2, the gear-shifting gear shaft assembly 3 and the differential assembly 4 are respectively connected to the shell assembly 5 through bearings 6.
The input shaft assembly 1 comprises an input shaft which is rotatably connected to the shell assembly 5 and a primary driving gear 11 which is connected to the input shaft; the primary driving gear 11 is fixedly connected with the input shaft.
The intermediate shaft assembly 2 comprises an intermediate shaft which is rotatably connected to the shell assembly 5, and a first-stage driven gear 21 and a first-stage driving gear 22 which are respectively connected with the intermediate shaft, wherein the first-stage driven gear 21 is meshed with the first-stage driving gear 11.
The gear shifting gear shaft assembly 3 is connected in the gear shifting gear shaft of the shell assembly 5 in a rotating mode, the gear shifting gear shaft is connected with a first-gear driven gear 32, a second-gear driven gear 31, a third-stage driving gear 33 and a gear shifting executing mechanism 36, the gear shifting executing mechanism 36 is arranged between the first-gear driven gear 32 and the second-gear driven gear 31, the first-gear driven gear 32 is meshed with the first-gear driving gear 22, and the second-gear driven gear 31 is meshed with the first-stage driven gear 21.
The primary driven gear 21 is meshed with the secondary driven gear 31, so that the primary driven gear 21 has the function of a secondary driving gear, the original secondary driving gear is omitted, and a three-stage two-gear four-shaft seven-gear transmission structure is realized; the structure of the whole transmission mechanism is simpler, and the transmission noise is reduced.
Example 2:
as shown in fig. 1 to 3, a two-speed gear transmission mechanism includes: the gear-shifting mechanism comprises an input shaft assembly 1, an intermediate shaft assembly 2, a gear-shifting gear shaft assembly 3, a differential assembly 4 and a shell assembly 5, wherein the input shaft assembly 1, the intermediate shaft assembly 2, the gear-shifting gear shaft assembly 3 and the differential assembly 4 are respectively connected to the shell assembly 5 through bearings 6.
The input shaft assembly 1 comprises an input shaft which is rotatably connected to the shell assembly 5 and a primary driving gear 11 which is connected to the input shaft; the primary driving gear 11 is fixedly connected with the input shaft.
The intermediate shaft assembly 2 comprises an intermediate shaft which is rotatably connected to the shell assembly 5, and a first-stage driven gear 21 and a first-stage driving gear 22 which are respectively connected with the intermediate shaft, wherein the first-stage driven gear 21 is meshed with the first-stage driving gear 11.
The gear shifting gear shaft assembly 3 is connected in the gear shifting gear shaft of the shell assembly 5 in a rotating mode, the gear shifting gear shaft is connected with a first-gear driven gear 32, a second-gear driven gear 31, a third-stage driving gear 33 and a gear shifting executing mechanism 36, the gear shifting executing mechanism 36 is arranged between the first-gear driven gear 32 and the second-gear driven gear 31, the first-gear driven gear 32 is meshed with the first-gear driving gear 22, and the second-gear driven gear 31 is meshed with the first-stage driven gear 21.
The primary driven gear 21 is meshed with the secondary driven gear 31, so that the primary driven gear 21 has the function of a secondary driving gear, the original secondary driving gear is omitted, and a three-stage two-gear four-shaft seven-gear transmission structure is realized; the structure of the whole transmission mechanism is simpler, and the transmission noise is reduced.
The second-gear driven gear 31 and the first-gear driven gear 32 are connected to the shift gear shaft through needle bearings 6, respectively, and can rotate at different rotational speeds relative to the shift gear shaft.
The first-gear driven gear 32 and the second-gear driven gear 31 are respectively rotatably connected with the gear shifting shaft, and the gear shifting actuator 36 is used for fixing the first-gear driven gear 32 or the second-gear driven gear 31 with the gear shifting shaft.
The gear shifting actuating mechanism 36 realizes gear shifting by meshing the internal spline of the sliding meshing sleeve with the external spline of the first-gear driven gear 32 or the external spline of the second-gear driven gear 31.
The gear shifting executing mechanism 36 may or may not include a synchronizer, the existing gear shifting executing mechanism 36 including the synchronizer may further reduce components and parts and improve product reliability if the existing gear shifting executing mechanism does not include the synchronizer, and shock-free gear shifting is achieved by measuring and calculating the number of teeth of the spline and matching input and output rotating speeds. (the measurement here can be carried out by a sensor which detects the relative rotational speed of the shift actuator 36 and the first driven gear 32 and the second driven gear 31)
The shift actuator 36 can move axially along the shift gear shaft, the selective shift gear shaft is connected with the first-gear driven gear 32 or the second-gear driven gear 31, when the shift synchronizer is located on the right side (as shown in fig. 2), the first-gear driven gear 32 and the third-stage driving gear 33 rotate synchronously, when the shift synchronizer is located on the left side, the second-gear driven gear 31 and the third-stage driving gear 33 rotate synchronously, and when the shift actuator 36 is located in the middle, the vehicle is in a neutral state.
And the input end of the primary driving gear 11 is connected with the output shaft of the driving motor through a spline.
The differential 42 serves as an output of the transmission to transmit power to the wheel end.
The housing assembly 5 includes a left housing and a right housing. The left shell and the right shell are connected through bolts to jointly support the gear transmission mechanism.
The specific working principle is as follows:
during the use, input shaft assembly 1 passes through one-level driving gear 11 with power transmission to jackshaft assembly 2, through the regulation of the actuating mechanism 36 of shifting, can keep off driving gear 22 through one and keep off driven gear 32 and transmit, also can keep off driven gear 21 and keep off driven gear 31 through one-level driven gear 21 and transmit, merges one-level driven gear 21 and second grade driving gear into a gear, makes it have the function of second grade driving gear, saves original second grade driving gear, and whole drive mechanism's structure is more succinct.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some technical features may still be made. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
The present invention is not limited to the above alternative embodiments, and other various forms of products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the utility model, which is defined in the claims, and which the description is intended to be interpreted accordingly.
Claims (6)
1. A two-speed gear transmission mechanism is characterized by comprising: the gear shifting mechanism comprises an input shaft assembly (1), an intermediate shaft assembly (2), a gear shifting gear shaft assembly (3), a differential assembly (4) and a shell assembly (5), wherein the input shaft assembly (1), the intermediate shaft assembly (2), the gear shifting gear shaft assembly (3) and the differential assembly (4) are respectively connected to the shell assembly (5) through bearings (6);
the input shaft assembly (1) comprises an input shaft which is rotationally connected to the shell assembly (5) and a primary driving gear (11) which is connected to the input shaft;
the intermediate shaft assembly (2) comprises an intermediate shaft which is rotatably connected to the shell assembly (5), a primary driven gear (21) and a primary driving gear (22) which are respectively connected with the intermediate shaft, and the primary driven gear (21) is meshed with the primary driving gear (11);
the gear shifting gear shaft assembly (3) comprises a gear shifting gear shaft which is rotatably connected to the shell assembly (5), the gear shifting gear shaft is connected with a first-gear driven gear (32), a second-gear driven gear (31), a third-stage driving gear (33) and a gear shifting executing mechanism (36), the gear shifting executing mechanism (36) is arranged between the first-gear driven gear (32) and the second-gear driven gear (31), the first-gear driven gear (32) is meshed with the first-gear driving gear (22), and the second-gear driven gear (31) is meshed with the first-stage driven gear (21);
differential assembly (4) is including rotating differential mechanism (42) of connecting in housing assembly (5), the casing of differential mechanism (42) is connected with tertiary driven gear (41), tertiary driven gear (41) and tertiary driving gear (33) meshing.
2. The two-speed gear transmission according to claim 1, wherein: the first-gear driven gear (32) and the second-gear driven gear (31) are respectively rotatably connected with the gear shifting gear shaft, and the gear shifting executing mechanism (36) is used for fixing the first-gear driven gear (32) or the second-gear driven gear (31) with the gear shifting gear shaft.
3. The two-speed gear transmission mechanism according to claim 1, wherein: the two-gear driven gear (31) and the first-gear driven gear (32) are connected to the gear shifting gear shaft through needle roller bearings (6) respectively.
4. The two-speed gear transmission according to claim 2, wherein: the gear shifting actuating mechanism (36) is meshed with the external spline of the first-gear driven gear (32) or the external spline of the second-gear driven gear (31) through the internal spline of the sliding meshing sleeve.
5. The two-speed gear transmission according to claim 1, wherein: the input end of the first-stage driving gear (11) is connected with the output shaft of the driving motor through a spline.
6. The two-speed gear transmission according to claim 1, wherein: the shell assembly (5) comprises a left shell and a right shell which are connected through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122485162.7U CN216666382U (en) | 2021-10-15 | 2021-10-15 | Two keep off gear drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122485162.7U CN216666382U (en) | 2021-10-15 | 2021-10-15 | Two keep off gear drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216666382U true CN216666382U (en) | 2022-06-03 |
Family
ID=81765224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122485162.7U Active CN216666382U (en) | 2021-10-15 | 2021-10-15 | Two keep off gear drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216666382U (en) |
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2021
- 2021-10-15 CN CN202122485162.7U patent/CN216666382U/en active Active
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